Rails/ActiveRecord使用mysql BIT

Question

我在使用Rails和ActiveRecord中的mysql位时遇到问题.我们存储了一些已发布的Localities状态.

`published` bit(1) NOT NULL

我把它搭建published:binary在铁轨上.

Locality.first.published回报"\x01".

如何让rails将此字段视为布尔值？

有一个staled Ticket,但黑客ActiveRecord不是一个真正的选择. https://rails.lighthouseapp.com/projects/8994/tickets/6102-activerecord-boolean-support-with-bit1-mysql-data-type

Answer 1

您可以覆盖已发布属性的属性读取器:

class Locality < ActiveRecord::Base
  # overwrite the attribute reader of the published attribute
  def published
    self.read_attribute(:published) == "\x01" ? true : false 
  end
end

UPDATE

或者为您的布尔返回值生成一个方法

class Locality < ActiveRecord::Base
  def to_boolean
    self.published == "\x01" ? true : false
  end
end

所以你可以打电话:

 Locality.first.published.to_boolean => true || false

但我认为第一个解决方案(覆盖属性读取器)更好.